vban-cmd-python/README.md

VBAN CMD

This package offers a Python interface for Voicemeeter VBAN TEXT as well as the Voicemeeter RT Packet Service which allows a client to send and receive parameter values over a local network.

It may be used standalone or to extend the Voicemeeter Remote Python API

For sending audio across a network with VBAN you will need to look elsewhere.

Tested against

• Basic 1.0.8.1
• Banana 2.0.6.1
• Potato 3.0.2.1

Prerequisites

• Voicemeeter 1 (Basic), 2 (Banana) or 3 (Potato)
• Python 3.9+

Installation

git clone https://github.com/onyx-and-iris/vban-cmd-python
cd vban-cmd-python

Just the interface:

pip install .

With development dependencies:

pip install -e .['development']

Use with a context manager:

It is advised to use this code with a context manager. Parameter coverage is not as extensive for the RT Packet Service as with the Remote API.

Example 1

import vbancmd

class ManyThings:
    def __init__(self, vban):
        self.vban = vban

    def things(self):
        # Set the mapping of the second input strip
        self.vban.strip[1].A3 = True
        print(f'Output A3 of Strip {self.vban.strip[1].label}: {self.vban.strip[1].A3}')

    def other_things(self):
        # Toggle mute for the leftmost output bus
        self.vban.bus[0].mute = not self.vban.bus[0].mute


def main():
    with vbancmd.connect(kind_id, ip=ip) as vban:
        do = ManyThings(vban)
        do.things()
        do.other_things()

if __name__ == '__main__':
    kind_id = 'potato'
    ip = '<ip address>'

    main()

API

Kinds

A kind specifies a major Voicemeeter version. Currently this encompasses

• basic
• banana
• potato

vbancmd.connect(kind_id, **kwargs) -> '(VbanCmd)'

Factory function for remotes. Keyword arguments include:

• ip: remote pc you wish to send requests to.
• streamname: default 'Command1'
• port: default 6990
• channel: from 0 to 255
• bps: bitrate of stream, default 0 should be safe for most cases.

VbanCmd (higher level)

vban.type

The kind of the Voicemeeter instance.

vban.version

A tuple of the form (v1, v2, v3, v4).

vban.strip

An InputStrip tuple, containing both physical and virtual.

vban.bus

An OutputBus tuple, containing both physical and virtual.

vban.show()

Shows Voicemeeter if it's hidden. No effect otherwise.

vban.hide()

Hides Voicemeeter if it's shown. No effect otherwise.

vban.shutdown()

Closes Voicemeeter.

vban.restart()

Restarts Voicemeeter's audio engine.

vban.apply(mapping)

Updates values through a dict.
Example:

vban.apply({
    'strip-2': dict(A1=True, B1=True, gain=-6.0),
    'bus-2': dict(mute=True),
})

Strip

The following properties are gettable and settable:

• mono: boolean
• solo: boolean
• mute: boolean
• label: string
• gain: float, -60 to 12
• Output mapping (e.g. A1, B3, etc.): boolean, depends on the Voicemeeter kind

The following properties are settable:

• comp: float, from 0.0 to 10.0
• gate: float, from 0.0 to 10.0
• limit: int, from -40 to 12

gainlayer

• gainlayer[j].gain: float, -60 to 12

for example:

# set and get the value of the second input strip, fourth gainlayer
vban.strip[1].gainlayer[3].gain = -6.3
print(vban.strip[1].gainlayer[3].gain)

Gainlayers defined for Potato version only.

Bus

The following properties are gettable and settable:

• mute: boolean
• mono: boolean
• eq: boolean
• eq_ab: boolean
• label: string
• gain: float, -60 to 12

mode

Bus modes are gettable and settable

• normal, amix, bmix, repeat, composite, tvmix, upmix21,
• upmix41, upmix61, centeronly, lfeonly, rearonly

for example:

# set leftmost bus mode to tvmix
vban.bus[0].mode.tvmix = True

VbanCmd (lower level)

vban.set_rt(id_, param, val)

Sends a string request RT Packet where the command would take the form:

f'{id_}.{param}={val}'

vban._get_rt()

Used for updating the RT data packet, used internally by the Interface.

vban.public_packet = vban._get_rt()

vban.sendtext(cmd)

Sends a multi parameter TEXT string command, for example:

# Use ';' or ',' for delimiters.
vban.sendtext('Strip[0].Mute=1;Strip[3].A3=0;Bus[2].Mute=0;Bus[3].Eq.On=1')

Errors

• errors.VMCMDErrors: Base VMCMD error class.

Tests

First make sure you installed the development dependencies

To run the tests from tests directory:

nosetests --r test -v

Resources

• Voicemeeter RT Packet Service